saunders



2 Sheets-Sheet 1.

(No Model.)

` W. L. SAUNDERS.

STONE GHAgIELING MACHINE.

Pategtedmpy zo. 1884.

WITNESSES:

2 Sheets-Sheet 2.

' (No Model.)

W. L. SAUNDERS. STONE GHANNELINGMAUHINE.

No.. 299,092. Patnt'ed May29l884 9 NVENTOR 09;' Lg 9 l l ATT() WHNBSSES www 4W/w a.

'Mirino trarne Artur trier-'3.

VILLIAM Ii. SAUNDEIi-S, OF JERSEY CITY, NEV JERSEY.

sroNE-cHANNELiNe MACHINE.

SPECIFICATION forming part of Letters Patent No. 299,092, dated May 20, 18534.

Application filed December E0, 1883.

fo @ZZ whom it may concern.-

Be it known that I, W ILLIAM L. SVAUNDERs, a citizen of the United States, residingin J ersey City, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Stone-Channeling Machines, of which the following is a specification.

My invention relates to that class of machines which make an open cut or channel in stone through the operation of a drill or gang of drills, which are fed in a direction parallel with the cut.

The object of my invention is to provide a direct-acting engine carrying a gang of drills, which shall loe capable of varied angular adj ustment, and which shall he fed longitudinally upon a bar resting upon supports, said feedmotion to be operated by and dependent upon the cutting-engine.

Figure lis a plan view ofthe machine. Fig. 2 is a side elevation, partly in section. Fig. 3 is a plan of the feed mechanism in the head of the cylinder of the operating-engine. Fig. 4. is a sectional view ofthe cross-head, showing the method of guiding it in the shell of the engine. Fig. 5 is a sectional view of the piston, showing the rifled nut and loar for the feed mechanism.

Simlar letters refer to similar parts throughout the several views.

A represents the engine; B, the shell, which holds the engine, and through which it is guided.

C is the saddle, through which the shell and engine are pivoted on the line m x.

D is the bar on which the whole is mounted and arranged to move longitudinally. The bar D is supported at each end by the crosspieces E E, which in turn rest upon legs F F F F.

The engine A is provided with a reciprocating piston, d, which in its upward stroke is made toiinpart a rotary motion to the rifled bar a, and thence to the gears f f 2 fi fi, thence to the shaft u, to which is fixed the pinion q, which engages in a rack, w, which is fixed to the loar D.

To the end of the rod G of the piston el is fixed the cross-head H. The face of this crosshead is provided with-a cap, K, which serves to clamp the cutting-tool L. The rear end of (No model.)

the cross-head II is provided with grooves which traverse the guides I I of the shell B. Thus the cross-head H, the cutting-tool L, and the piston d are immovable, except in a direction parallel with the stroke of the engine.

In the upper head of the piston d is inserted a nut, b, which is fixed to the piston. The inner surface of this nut b is riied with grooves corresponding with grooves made on the surface ofthe har c, which pass through the nut b into the piston d. The upper end of the bar a passes through the upper cylinder-head, f, and is provided with a stuffing-box, g, to prevent the escape of steam.

Immediately above the head piece t' the ratchet e is keyed to the bar a. This ratchet is provided with pawls p p p p, Fig. 3, which are pivoted to the 'revolving head-piece 71. These pawls engagein the teeth of the ratchet c. To the upper part of the revolving head-piece h, and concentric with it, is fixed the spur-V gear f. The rifled har a passes through the revolving head-piece h and the spur-gear j", and is in contact with them only through the pawls p p p p. The rified har finally terminates against the bracket Z.

The operation of the inechanisnir is as follows: The piston d being raised by the steam underneath, causes the nut Z) to act torsionally upon the riiied bar u, ilnparting a rotary moA tion thereto. This rotary motion thrusts the ratchet e against the pawls p p p p, and hence the entire head-piece h is made to revolve. This rotary movement is imparted to the spurgear f', thence to the intermediate gear, f2, to the gear f3, thence through the shaft j to the bevel-gear f, which, together with the gear f 5, is fixed to the quill r, which moves upon a spline on the shaft u. To the shaft u is fixed a pinion, q, which engages in the rack w. This shaft u being fixed to the saddle C, a longitudinal motion is thus imparted to the operating-engine. On completing the upstroke the piston reverses its motion and the riiled har a is rotated in the opposite direction, and as the ratchet e is free to turn within the pawls p p p p it is merely returned to its former position, while the revolving head-piece 7L and the gears connected therewith remain stationary. Thus the cutting-tool is propelled longitudinally with the bar at every upstroke o the operating-engine.

IOO

The shell Bis pivoted to the saddle C on the line x x, and may be inclined to the right or left, as desired.

The bar D is hung to swing -on its longitudinal aXis y y, Fig. 1, through bolts o and o2, which pass through the cross-pieces E and E. Thus the cutting-tool may be swung so as to Cut a channel in a horizontal plane.

I do not conne myself to the longitudinal feed of the engine on the upstroke of the piston only, as it is evident that by reversing the ratchet and pawls in the cylinder head-piece the feed may be imparted while the piston is on the downstroke I am aware that percussion rock-drills are in use where a riiled bar and nut passing into the piston serve `to impart a rotary motion to the piston during the drilling of holes.

' I am further aware that such percussion rock-drills have heretofore been mounted on horizontal bars and made to traverse the same longitudinally.

Having on the 20th day of December, 1883, filed an application for patent for improvements in stone-cutting machines, Serial No. 115,233, in which I have shown and claimed the combination of a cutting-tool, reciprocating engine, and means for converting the motion of the tool into a rotary motion of the shaft which supports the machine, and having on the 28th day of December, 1883, led an application for patent for improvements in carriages for rock-drills, being Serial N o. 115, 880, wherein I have shown and claimed a drill and engine fixed to a saddle and mounted upon a y standard, with means for raising and lowering the said standard in avertical plane, I do not herein claim what is shown and claimed in either of said applications; but

What I claim as new and of my invention 4o 1s- 1. In a stone-channeling machine, the combination, with the cutting-tool, of a piston to which said tool is attached, means for commu- Y nicating a reciprocating motion to said tool, 4.5 and supporting mechanism consisting of a horizontal bar and suitable transverse supports therefor, a train of gearing operating to move the drill-carriage along said bar, said gearing being actuated by theto-and-fro movement of the piston, whereby said reciprocating action will `'automatically move the cutting-engine in a horizontal path in the direction of the cut.

2. In a stone-channeling machine, the combination, with a cutting-tool, of a piston to which said tool is attached, means for communicating a reciprocating motion to said piston, and mechanism consisting of the horizontal bar D and supports E E therefor, atrain of 6o gearing attached to the drill-carriage, and engaging and being supported upon the horizontal bar, and a riiied bar operated by the piston to impart motion to said gearing at each stroke of the piston, whereby the cutting-en- 6 5 gine is moved step by step along the horizontal bar, substantially as herein described.

In testimony whereof I have hereunto subscribed my name this 18th day of December,

WILLIAM L. SAUNDERS.

Vitiiesses:

DANL. W. EDGncoMB, CHARLEs A. TERRY. 

